It's always interesting to see how different people write code. Except for the weird use of s/// I would have written that routine in much the same way as delirium. It probably has to do with how I "grew up" as a programmer. For instance, being used to C/C++, it's more natural for me to write && than and so I tend to prefer the former over the latter (except, of course, for instances where && has the wrong precedence).